Thalamus was owned by Newsfield. Ex-Zzap! Gary Liddon was one of the founding executives. The name and logo were later used by Thalamus Publishing for a number of years. That imprint mostly worked on history books, but also issued a volume of Oliver Frey's art. I did their website, oddly enough. That was wound up, and the name now exists as 'Thalamus Digital Publishing', which is looking to remaster classic Thalamus titles like
Hunter's Moon.
And Snare was a superb game (and, oddly, under-rated in Zzap!64).